Offset disk harrow



July 2, 1935. w GOELE 2,006,547

OFFSET DISK HARROW Filed May 31, 1934 2 Sheets-Sheet l l /iq w- Mmwentorp W W I July 2, 1935. w GQBLE OFFSET DISK HARROW Filed May 31, 1934 2Sheets-Sheet 2 Bnnentor 0 m\ 0 U o (Ittdrneg Patented July 2, 1935UNITED STATES PATENT OFFICE OFFSET DISK HARROW William E. Goble, Selma,Calif. Application May 31, 1934, Serial No. 728,399 '3 Claims. (01.55-83) My invention relates to an offset disk haris easily done bywelding, but the rails forming row. An offset disk harrow is usuallyconstructthe frame can be attached together by any well ed of two unitsections. Each unit section has known means. The front section frame hasa a plurality of disk blades positioned in the secfront rail 5, a rearrail 6 and ends I. A plution with the concave faces of the disksunirality of disk blades 8 are spaced apart by spac- 5 formly facing thesame direction. The two se'cers 9, and the assembled spacers and diskblades tions are assembled with the concave faces of are adapted torotate on an axle, not shown in the one section facing the oppositedirection to the drawings, which axle extends lengthwise the concavefaces of the cooperating unit secthroughthe spacer and disk assembly,said axle 10 tion. when these unit sections are adjusted for beingattached to either end of the frame. This 10 work, they are arranged inthe form of a V specific form of assembly of disk blades, spacers, withrelation to each other, and the draft is axle and bearings is more fullydisclosed in applied to one side of the V between the apex United StatesPatent issued to me October 31, of said V and the opposite end of one ofthe 1933, Patent Number 1,932,619. It is noted that stems. When thesections of the harrow are my present invention can be applied to other15 thus assembled it is noted that in turning the forms of offset diskearth working tools in which disk it will be comparatively easy to turntoward two sections are hinged together. the apex of the V, but it ispractically impossi- The rear section of the disk harrow is conble toturn toward the open end of the V. The structed similarly to the frontsection. For conobject of my invention is the construction of anvenience of description to follow I have desig- 20 offset disk harrowconstructed of a front and nated the front rail of the rear section asill, the rear section that can be easily turned toward the rear rail Il, the right end l2, and the left end I3. left or toward the right.Another object is the F r he purp f s r n heni the fr me I constructionof an offset disk that regardless of have attached an auxiliary rail Itto rail 6.

the condition of the soil or growth on the soil It is also noted that inthe following descrip- 25 the two sections will remain in formation fortion, a d in the d wings I have shown offset working the earth so longas it is being pulled d sk b w in which the p of the V s t forward.Another object is the formation of an the right w the w 1 n operativeformaoffset disk harrow the sections of which are tion. My inv y pp d asW l 0 adapted to fold together when turning toward to offset diskbarrows which may built w t the open end of the harrow, but which willine p of the V at e left Side when in D- terlock when in operativeposition when being erative formation. pulled forward. Other objectswill be hereinn my nvention the front and. rear sections afterdisclosed. comprising the harrow or earth working tool are 3 Theseobjects are accomplished by means of hinged together y hinge consistingo a p t the device hereinafter described and illustrated which isrigidly attached t0 auxiliary l'eil on the accompanying drawings inwhich Fig. 1 by ts The opposite end of plate I4 is shows a top plan viewof the disk harrow with etteehed y D t be eblweket which b a kmyinvention incorporated therewith, in which ei? is attached to rail ThePosition o th s 40 the sections comprising said harrow have, in hingeShould b b we n e n itudinal center 40 turning, automatically assumed anapproximate f falls 5 0 and the right e d of said sections.

V formation, which is the reverse of the V fcrma- Holes I50 ineuxiliel'y mil are for the Pu p e tion necessary for operating as aharrow. Fig. of making adjustments the e, o the beam 2 is an end view ofthe device as shown in Fig. hereinafter referred to.

1; 3 is slightly modified form of disk A beam I9 is pivotally attachedat one end to 45 harrow in formation for tilling the soil. Fig. 4auxiliary rail Hi. The opposite end of the beam is a similar view of theform shown in Fig. 3 is Pivotelly attached to a arm 20, which arm isshowing an automatic adjustment of the two pivetelly attached tobreckei- Seid b a ket sections relative to each other in turning. beingattached to end member At e Point Referring to the drawings, and morespeciflon beam I9 between the two ends is pivotally 50 cally to Fig.1, Ihave formed an offset disk harattached a connecting arm 2 l. Connectingarm row consisting of front and rear sections. The 2| should extend to,or beyond the front rail 5. front section comprises a frameapproximately It passes between two of the diskblades andasliderectangular in shape. To strengthen the tool I guide 55. A draw bar 22is pivotally attached at have preferred to form the frame integral whichone end to connecting arm 2|, and at the other 55 endto tractor hitch25. A brace 24 extends from draw bar 22 to rail 5, said brace beingpivoted at either end.

In the drawings I have shown an auxiliary tractor hitch 26 which has aplurality of holes to the right and to the left of the center of thehitch. The hitch 25 shown consists of a bar which can be used as shownif desired, but the objects of my invention can be accomplished by usingthe auxiliary tractor hitch 26 only, and by pivotally connecting thedraw bar 22 to said auxiliary hitch. I have attached a cable 21 at oneend to auxiliary tractor hitch a spaced distance from the point wherethe draw bar is attached thereto, and the other end'is attached to rail5 at a point to the right of the lateral center of said rail. The cableshould be of such length that in turning, when the tractor hitch swingson its pivot 220 the draft will be transferred from the drawbar 22 tocable 21. It is noted that said cable 21 can be substituted by a chainor a rod.

In Figures 3 and 4 I have shown a slightly different form ofconstruction, the difference being that plate I40, in Figs. 3 and 4, isrigidly attached to rail III of the rear section, and the pivot I" onwhich the hinge turns is attached to support III which support is inturn rigidly attached to rail 6.

The operation of this device is as follows. On a forward movement of theharrow, when itis desired that the device function as a barrow, the twosections of the disk normally assume the position shown in Fig. 3, inwhich position the disks are set at an angle for cutting. Through thecombination of draw bar 22, connecting arm 2!, beam l4, and arm. 20, thepull from the tractor is communicated approximately to the center of theend l2 of the rear section, and regardless of soil conditions, theforward p'ull holds the two sections in a V relation with each other. Itis only when the draft on the draw bar is released, and the draft iscommunicated to the right half of the front section will the twosections fold together. When the tractor starts to turn toward the leftas shown in Figs. 1 and 4, the draft on the drawbar 22 is released, andsaid draft is transferred to cable 21, the pull or draft on the end l2of the rear section is also and the two sections will draw together in aparallel relation, and if the turn is short enough, they will drawtogether in a V relation with the apex of the V towardthe left. Ineither the parallel relation or in the V relation with the apex at theleft, the harrow can be easily turnedtoward the left.

It is also noted that while I have confined my description to an offsetdisk harrow, the same principle applies to any earth working tooloperating similarly to an offset disk harrow.

Having described my invention I claim as new and ask for Letters Patent.

1. In an offset disk earth working tool constructed with a front andback'section hinged together, and in combination with a hitch having aplurality of means spaced apart adapted to attach draw bar means, ofmeans for connecting said hinged sections with said hitch consisting ofa beam pivotally connected at one end to the rear portion of the frontsection between the lateral center of said section and one end thereof,said 'beam extending to the opposite end of the rear section, an armadapted to pivotally connect the end of said beam with said rear sectionat the approximate center of said end of said section, a draw barpivotally connected to said beam be tween the ends thereof, and to saidhitch, and a cable attached at one end to the hitch a spaced distancefrom the point to which the draw bar is attached, the opposite end ofsaid cable being attached to the front section between the lateralcenter of said section and the end opposite to which the beam isattached to said section.

2. In an offset disk harrow having a front and a rear section hingedtogether a spaced distance apart, and adapted to be moved on said hingeto be parallel with each other, and adapted to be moved so that saidsections can form a V with the apex of the V either to the right or tothe left, of means for connecting said disk assembly 3 means, said hitchmeans being adapted to be pivotally attached to said draw bar, and acable attached to said hitch means a spaced distance from the pointwhere the draw bar is pivoted thereto, an end of said cable beingattached to the front rail of the front section between the lateralcenter of said section and the end opposite to the end to which the beamis pivoted.

3. In an offset disk harrow having a front and a rear section, thecombination of hinge means connecting said sections, said hinge meansbeing positioned at one side of the lateral center of said sections, abeam pivotally attached to the front section on the opposite side of thelateral center of the section on which the hinge is positioned, an armpivotally connected with the rear section and with said beam, a draw barpivotally attached to the beam between the ends thereof, said draw barBeing adapted to extend transversely across the front section, hitchmeans adapted to be pivotally connected with the draw bar, and anauxiliarydraw bar attached at one end to the hitch a spaced distancefrom the place where the draw bar is pivotally attached, and one end ofsaid auxiliary draw bar being attached to the front section between thelateral center of said section and the end opposite to the place towhich the beam is attached.

WILLIAM E. GOBLE.

